/* Reset y Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --bg-color: #f1f5f9;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    -webkit-user-select: none;
    user-select: none;
    touch-action: manipulation;
}

/* Pantallas */
.screen {
    display: none;
    height: 100vh;
}

.screen.active {
    display: flex;
}

/* Login Screen */
#login-screen {
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow-y: auto;
    padding: 1rem 0;
}

.login-container {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 380px;
    margin-bottom: 0.5rem;
}

.login-container h1 {
    text-align: center;
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1.8rem;
}

/* PIN Keyboard - overlay centrado */
.pin-keyboard {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    width: 300px;
}

.pin-keyboard.active {
    display: block;
}

.pin-keyboard.active ~ .login-container,
.pin-keyboard.active + .login-container {
    filter: blur(2px);
}

.pin-display {
    margin-bottom: 0.75rem;
    text-align: center;
}

.pin-dots {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
}

.pin-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background: transparent;
    transition: all 0.2s;
}

.pin-dot.filled {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.pin-numpad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.pin-key {
    min-height: 44px;
    padding: 0.4rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    touch-action: manipulation;
}

.pin-key:active {
    transform: scale(0.95);
    background: var(--primary-hover);
}

.pin-key.pin-clear {
    background: var(--danger-color);
}

.pin-key.pin-backspace {
    background: var(--secondary-color);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* Inputs optimizados para táctil */
.touch-input {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    background: var(--card-bg);
    transition: all 0.2s;
    min-height: 50px;
}

.touch-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Botones */
.btn {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 48px;
    touch-action: manipulation;
}

.btn:active {
    transform: scale(0.98);
}

.btn-large {
    width: 100%;
    padding: 1.25rem;
    font-size: 1.2rem;
    min-height: 56px;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background: #475569;
}

.btn-warning {
    background: #f59e0b;
    color: white;
}

.btn-warning:hover {
    background: #d97706;
}

/* Salon Screen */
#salon-screen {
    flex-direction: column;
    background: var(--bg-color);
}

.salon-header {
    background: var(--card-bg);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-color);
}

.salon-header h2 {
    margin: 0;
    color: var(--text-primary);
}

.salones-container {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
}

.salones-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

.salon-tab {
    padding: 1rem 2rem;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
    min-height: 50px;
}

.salon-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.salon-tab:active {
    transform: scale(0.98);
}

.mesas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
}

.mesa-card {
    background: var(--card-bg);
    border: 3px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    min-height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.mesa-card:active {
    transform: scale(0.98);
}

.mesa-card.libre {
    border-color: var(--success-color);
    background: rgba(16, 185, 129, 0.05);
}

.mesa-card.libre:hover {
    border-color: var(--success-color);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
}

.mesa-card.ocupada {
    border-color: var(--danger-color);
    background: rgba(239, 68, 68, 0.05);
}

.mesa-card.ocupada:hover {
    border-color: var(--danger-color);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}

.mesa-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.mesa-status {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.mesa-card.libre .mesa-status {
    color: var(--success-color);
}

.mesa-card.ocupada .mesa-status {
    color: var(--danger-color);
}

.mesa-total {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0.5rem 0;
}

.mesa-capacity {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.ventas-pausa-panel {
    background: var(--card-bg);
    border-top: 2px solid var(--border-color);
    padding: 1.5rem;
    max-height: 200px;
    overflow-y: auto;
}

.ventas-pausa-panel h3 {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
}

.venta-pausa-card {
    background: var(--bg-color);
    border: 2px solid var(--primary-color);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 0.75rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s;
}

.venta-pausa-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.venta-pausa-info strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.venta-pausa-info small {
    color: var(--text-secondary);
}

.venta-pausa-total {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.no-ventas {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
}

/* POS Screen */
#pos-screen {
    flex-direction: column;
}

.mesa-badge {
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-weight: 600;
    font-size: 0.95rem;
}

.mesa-badge.ocupada {
    background: var(--danger-color);
    color: white;
}

.mesa-badge.llevar,
.mesa-badge.para-llevar {
    background: var(--success-color);
    color: white;
}

.pos-header {
    background: var(--card-bg);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-color);
    box-shadow: var(--shadow);
}

.header-info {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    font-weight: 500;
}

.separator {
    color: var(--text-secondary);
}

.header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

#current-time {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* Contenedor Principal */
.pos-container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Panel de Productos */
.products-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1rem;
    overflow: hidden;
}

.search-bar {
    margin-bottom: 1rem;
}

.search-bar input {
    width: 100%;
    font-size: 1.2rem;
}

.categories {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    position: relative;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) transparent;
}

.categories::-webkit-scrollbar {
    height: 6px;
}

.categories::-webkit-scrollbar-track {
    background: transparent;
}

.categories::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
}

/* Category scroll arrows */
.categories-wrapper {
    position: relative;
    margin-bottom: 0.5rem;
}

.categories-wrapper .cat-scroll-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-60%);
    z-index: 5;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255,255,255,0.95);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    font-size: 1.1em;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #333;
}

.categories-wrapper .cat-scroll-left {
    left: 0;
}

.categories-wrapper .cat-scroll-right {
    right: 0;
}

.category-btn {
    padding: 0.75rem 1.5rem;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 2rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
    min-height: 44px;
}

.category-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.category-btn:active {
    transform: scale(0.95);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    overflow-y: auto;
    padding-bottom: 1rem;
}

.product-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    min-height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.product-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.product-card:active {
    transform: scale(0.98);
}

.product-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.product-name {
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.product-price {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.product-stock {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Panel de Carrito */
.cart-panel {
    width: 400px;
    background: var(--card-bg);
    border-left: 2px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    position: relative;
}

.cart-panel h2 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    margin-bottom: 1rem;
    scroll-behavior: smooth;
}

/* Botones de scroll del carrito */
.cart-scroll-btn {
    position: absolute;
    right: 1.5rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transition: all 0.2s;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cart-scroll-btn:hover {
    background: var(--primary-hover);
    transform: scale(1.1);
}

.cart-scroll-btn:active {
    transform: scale(0.95);
}

.cart-scroll-up {
    top: 5rem;
}

.cart-scroll-down {
    bottom: 18rem;
}

.empty-cart {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-cart p {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.cart-item {
    background: var(--bg-color);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 0.75rem;
    border: 2px solid var(--border-color);
}

.cart-item-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.cart-item-name {
    font-weight: 500;
}

.cart-item-price {
    color: var(--text-secondary);
}

.cart-item-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.qty-btn {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border-color);
    background: var(--card-bg);
    border-radius: 0.5rem;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.2s;
}

.qty-btn:active {
    transform: scale(0.9);
    background: var(--bg-color);
}

.qty-display {
    min-width: 40px;
    text-align: center;
    font-weight: 600;
    font-size: 1.1rem;
}

.remove-btn {
    margin-left: auto;
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    font-size: 1rem;
}

.remove-btn:active {
    transform: scale(0.9);
}

.cart-item-total {
    text-align: right;
    font-weight: 700;
    color: var(--primary-color);
    margin-top: 0.5rem;
    font-size: 1.1rem;
}

.cart-summary {
    border-top: 2px solid var(--border-color);
    padding-top: 1rem;
    margin-bottom: 1rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.summary-row.total {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-top: 0.5rem;
    padding-top: 0.75rem;
    border-top: 2px solid var(--border-color);
}

.cart-actions {
    display: flex;
    gap: 1rem;
}

/* Modales */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    max-height: 95vh;
    overflow-y: auto;
}

.modal-content h2 {
    margin-bottom: 1rem;
    text-align: center;
    font-size: 1.4rem;
}

/* Weight modal quick buttons */
.weight-quick-btn {
    flex: 1;
    padding: 10px 5px !important;
    font-size: 1em !important;
    min-width: 0;
}

/* Weight modal numpad */
.weight-display {
    font-size: 2em;
    text-align: center;
    padding: 12px;
    margin-bottom: 10px;
    background: #f9fafb;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    min-height: 50px;
    font-weight: 600;
    color: #1f2937;
}

.weight-numpad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 10px;
}

.weight-numpad-key {
    padding: 16px 8px;
    font-size: 1.3em;
    font-weight: 600;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: white;
    cursor: pointer;
    min-height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.1s;
}

.weight-numpad-key:active {
    background: #e5e7eb;
    transform: scale(0.95);
}

.weight-numpad-key.key-clear {
    background: #fee2e2;
    color: #dc2626;
}

.weight-numpad-key.key-backspace {
    background: #fef3c7;
    color: #d97706;
}

/* Cart item unit display */
.cart-item-unit {
    font-size: 0.75em;
    color: #6b7280;
    margin-left: 4px;
}

.cart-item-edit-weight {
    background: #3b82f6;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 2px 8px;
    font-size: 0.75em;
    cursor: pointer;
}

/* Pantalla de Pago */
#payment-screen {
    flex-direction: column;
    background: var(--bg-color);
}

.payment-container {
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.payment-header {
    background: white;
    padding: 1rem 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.payment-header h2 {
    margin: 0;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.payment-content {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 1.5rem;
    overflow: hidden;
}

.payment-content.two-columns {
    grid-template-columns: 1fr 1fr;
}

.payment-left,
.payment-right {
    background: white;
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.payment-left {
    gap: 1rem;
}

.payment-right {
    display: none; /* Oculto por defecto */
    justify-content: center;
    align-items: center;
}

.payment-right.active {
    display: flex; /* Mostrar cuando esté activo */
}

/* Payment Screen Components */
.payment-summary {
    background: var(--bg-color);
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.payment-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.payment-row.pending {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--danger-color);
    margin-top: 0.25rem;
    padding-top: 0.25rem;
    border-top: 2px solid var(--border-color);
}

.payment-total {
    font-weight: 700;
    color: var(--primary-color);
}

.payment-pending {
    font-weight: 700;
}

.payments-list {
    margin-bottom: 1rem;
    max-height: 120px;
    overflow-y: auto;
}

.payment-item {
    padding: 0.75rem;
    background: var(--bg-color);
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    border: 2px solid var(--success-color);
}

.payment-item-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.payment-change-info {
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--success-color);
    font-weight: 600;
    text-align: center;
}

.payment-item-amount {
    font-weight: 700;
    color: var(--primary-color);
    margin-left: auto;
    margin-right: 1rem;
}

.payment-item-remove {
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    width: 32px;
    height: 32px;
    cursor: pointer;
    font-size: 1.1rem;
}

.payment-methods-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.payment-method-card {
    padding: 0.75rem;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    min-height: 80px;
}

.payment-method-card:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.payment-method-card:active {
    transform: scale(0.98);
}

.payment-method-card.selected {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.payment-icon {
    font-size: 1.6rem;
}

.payment-input-section {
    width: 100%;
    max-width: 400px;
    display: none; /* Oculto por defecto, se muestra al seleccionar método */
}

.payment-input-section label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.payment-amount-input {
    width: 100%;
    padding: 0.5rem;
    font-size: 1.3rem;
    font-weight: 700;
    text-align: center;
    border: 2px solid var(--primary-color);
    border-radius: 0.5rem;
    background: white;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.payment-numpad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.numpad-key {
    aspect-ratio: 1;
    min-height: 80px;
    max-height: 60px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    touch-action: manipulation;
}

.numpad-key:active {
    transform: scale(0.95);
    background: var(--primary-hover);
}

.numpad-key.numpad-clear {
    background: var(--danger-color);
}

.numpad-key.numpad-decimal {
    background: var(--secondary-color);
}

.payment-input-actions {
    display: flex;
    gap: 1rem;
}

.change-display-large {
    background: var(--success-color);
    padding: 1.25rem;
    border-radius: 0.75rem;
    text-align: center;
    margin-bottom: 1rem;
    animation: pulse 1s infinite;
}

.change-label {
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.25rem;
}

.change-amount-large {
    font-size: 2.5rem;
    font-weight: 900;
    color: white;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.9;
    }
}

.payment-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.payment-method-btn {
    padding: 1.5rem 1rem;
    background: var(--card-bg);
    border: 3px solid var(--border-color);
    border-radius: 0.75rem;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.payment-method-btn:hover {
    border-color: var(--primary-color);
}

.payment-method-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.payment-detail {
    margin-bottom: 1.5rem;
}

.change-display {
    display: flex;
    justify-content: space-between;
    font-size: 1.3rem;
    font-weight: 600;
    margin-top: 1rem;
    padding: 1rem;
    background: var(--success-color);
    color: white;
    border-radius: 0.5rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
}

/* Modal de Éxito */
.modal-content.success {
    text-align: center;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: var(--success-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    margin: 0 auto 1.5rem;
}

.success-amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--success-color);
    margin: 1.5rem 0;
}

.success-change {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--warning-color);
    background: rgba(255, 193, 7, 0.1);
    padding: 1rem;
    border-radius: 0.5rem;
    margin: 1rem 0;
    border: 2px solid var(--warning-color);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Virtual Keyboard */
.keyboard-container {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--card-bg);
    border-top: 3px solid var(--primary-color);
    padding: 1rem;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
    z-index: 2000;
    max-height: 50vh;
}

.keyboard-container.active {
    display: block;
}

.keyboard-display {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    align-items: center;
}

.keyboard-input {
    flex: 1;
    padding: 1rem;
    font-size: 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    background: var(--bg-color);
    color: var(--text-primary);
    font-weight: 500;
}

.keyboard-clear-btn {
    width: 50px;
    height: 50px;
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.keyboard-clear-btn:active {
    transform: scale(0.95);
}

.keyboard-keys {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.keyboard-row {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.key-btn {
    flex: 1;
    min-width: 50px;
    max-width: 80px;
    height: 55px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    touch-action: manipulation;
}

.key-btn:active {
    transform: scale(0.95);
    background: var(--primary-hover);
}

.key-btn.key-backspace {
    background: var(--secondary-color);
    max-width: 100px;
}

.key-btn.key-space {
    flex: 2;
    max-width: 200px;
}

.keyboard-close-btn {
    width: 100%;
    padding: 1rem;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.keyboard-close-btn:active {
    transform: scale(0.98);
}

/* Responsive */
@media (max-width: 768px) {
    .pos-container {
        flex-direction: column;
    }

    .cart-panel {
        width: 100%;
        max-height: 50vh;
        border-left: none;
        border-top: 2px solid var(--border-color);
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .payment-methods {
        grid-template-columns: 1fr;
    }

    .key-btn {
        min-width: 40px;
        max-width: 60px;
        height: 48px;
        font-size: 1rem;
    }

    .keyboard-container {
        max-height: 60vh;
    }
}

/* Versión y Actualización en Login */
.version-info {
    width: 100%;
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.version-badge {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.5rem 1.25rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.btn-update-login {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(16, 185, 129, 0.3);
    transition: all 0.3s;
    width: 100%;
    max-width: 400px;
}

.btn-update-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(16, 185, 129, 0.4);
}

.btn-update-login:active {
    transform: translateY(0);
}

.pulse-animation {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 4px 6px rgba(16, 185, 129, 0.3);
    }
    50% {
        box-shadow: 0 4px 20px rgba(16, 185, 129, 0.6);
    }
}

/* ==================== INDICADOR ONLINE/OFFLINE ==================== */
#connection-status {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.25rem 0.6rem;
    border-radius: 1rem;
    transition: all 0.3s ease;
}

.status-online {
    color: var(--success-color);
}

.status-offline {
    color: var(--danger-color);
}

.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.status-online .status-dot {
    background: var(--success-color);
    animation: statusPulse 2s infinite;
}

.status-offline .status-dot {
    background: var(--danger-color);
}

@keyframes statusPulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    50% { opacity: 0.7; box-shadow: 0 0 0 4px rgba(16, 185, 129, 0); }
}

.pending-count {
    background: var(--danger-color);
    color: white;
    font-size: 0.7rem;
    padding: 0.1rem 0.4rem;
    border-radius: 0.75rem;
    font-weight: 700;
    margin-left: 0.15rem;
}

/* ==================== PANTALLA DE VITRINA ==================== */
#vitrina-screen {
    flex-direction: column;
    background: var(--bg-color);
}

.vitrina-container {
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.vitrina-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.vitrina-content {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 0;
    overflow: hidden;
}

.vitrina-products-panel {
    background: var(--bg-color);
    padding: 1.5rem;
    overflow-y: auto;
}

.vitrina-order-panel {
    background: white;
    border-left: 2px solid var(--border-color);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.vitrina-order-items {
    flex: 1;
    overflow-y: auto;
    margin-bottom: 1rem;
}

.vitrina-summary {
    padding: 1rem 0;
    border-top: 2px solid var(--border-color);
    margin-bottom: 1rem;
}

.vitrina-actions {
    display: flex;
    gap: 1rem;
}

/* ==================== PANEL DE PEDIDOS PENDIENTES ==================== */
.pedidos-panel {
    position: fixed;
    top: 4rem;
    right: -450px;
    width: 450px;
    height: calc(100vh - 4rem);
    background: white;
    box-shadow: -4px 0 15px rgba(0,0,0,0.2);
    transition: right 0.3s ease;
    z-index: 1000;
    display: flex;
    flex-direction: column;
}

.pedidos-panel.active {
    right: 0;
}

.pedidos-panel-header {
    padding: 1.5rem;
    background: var(--primary-color);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pedidos-panel-header h3 {
    margin: 0;
    font-size: 1.3rem;
}

.btn-close-panel {
    background: rgba(255,255,255,0.2);
    color: white;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-close-panel:hover {
    background: rgba(255,255,255,0.3);
    transform: scale(1.1);
}

.pedidos-panel-content {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

.pedido-card {
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1rem;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    gap: 1rem;
    align-items: center;
}

.pedido-card:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
    transform: translateY(-2px);
}

.pedido-numero {
    background: var(--primary-color);
    color: white;
    padding: 0.75rem;
    border-radius: 0.5rem;
    font-weight: 700;
    font-size: 1.2rem;
    min-width: 70px;
    text-align: center;
}

.pedido-info {
    flex: 1;
}

.pedido-hora {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.pedido-items {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.pedido-total {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--success-color);
}

.badge-count {
    background: var(--danger-color);
    color: white;
    border-radius: 50%;
    padding: 0.15rem 0.5rem;
    font-size: 0.8rem;
    font-weight: 700;
    margin-left: 0.5rem;
}

.empty-message {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

/* Modal de Pedido Enviado */
.pedido-numero-large {
    font-size: 4rem;
    font-weight: 900;
    color: var(--primary-color);
    margin: 1rem 0;
}

.pedido-instruccion {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 300px;
    margin: 1rem auto;
}

/* Responsive para Vitrina */
@media (max-width: 768px) {
    .vitrina-content {
        grid-template-columns: 1fr;
    }

    .vitrina-order-panel {
        display: none;
    }

    .pedidos-panel {
        width: 100%;
        right: -100%;
    }
}

/* ==================== MEDIA QUERIES PARA RESOLUCIONES BAJAS (800x600 y similares) ==================== */
@media (max-width: 900px) and (max-height: 700px) {
    /* Ajustar header principal POS */
    .pos-header {
        padding: 0.4rem 0.5rem;
        flex-direction: column;
        gap: 0.5rem;
        align-items: stretch;
    }

    .header-info {
        font-size: 0.75rem;
        gap: 0.25rem;
        flex-shrink: 0;
        justify-content: center;
        width: 100%;
    }

    .header-info span {
        white-space: nowrap;
    }

    .header-actions {
        gap: 0.4rem;
        flex-wrap: nowrap;
        justify-content: space-between;
        width: 100%;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none; /* Firefox */
        -ms-overflow-style: none; /* IE/Edge */
    }

    .header-actions::-webkit-scrollbar {
        display: none; /* Chrome/Safari/Opera */
    }

    .header-actions .btn {
        padding: 0.3rem 0.5rem;
        font-size: 0.7rem;
        min-height: 32px;
        white-space: nowrap;
        flex-shrink: 0;
    }

    .header-actions #current-time {
        font-size: 0.75rem;
        flex-shrink: 0;
    }

    .badge-count {
        padding: 0.1rem 0.35rem;
        font-size: 0.7rem;
    }

    .mesa-badge {
        padding: 0.35rem 0.75rem;
        font-size: 0.8rem;
    }

    /* Ajustar botones de scroll del carrito - posicionarlos mejor */
    .cart-scroll-btn {
        width: 35px;
        height: 35px;
        font-size: 1rem;
        right: 0.5rem;
    }

    .cart-scroll-up {
        top: 5.5rem;
    }

    .cart-scroll-down {
        bottom: 13rem;
    }

    /* Reducir panel de carrito */
    .cart-panel {
        width: 320px;
        padding: 1rem;
    }

    .cart-panel h2 {
        font-size: 1.3rem;
        margin-bottom: 1rem;
    }

    /* Reducir tamaños de productos */
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 0.75rem;
    }

    .product-card {
        padding: 0.75rem;
        min-height: 150px;
    }

    .product-icon {
        font-size: 2.5rem;
    }

    .product-name {
        font-size: 0.85rem;
    }

    .product-price {
        font-size: 1rem;
    }

    /* Barra de búsqueda más compacta */
    .search-bar input {
        font-size: 1rem;
        padding: 0.75rem;
        min-height: 42px;
    }

    /* Categorías más pequeñas */
    .category-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
        min-height: 38px;
    }

    /* Ajustar items del carrito */
    .cart-item {
        padding: 0.75rem;
        margin-bottom: 0.5rem;
    }

    .cart-item-name {
        font-size: 0.9rem;
    }

    .qty-btn {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }

    .qty-display {
        font-size: 1rem;
        min-width: 35px;
    }

    .remove-btn {
        padding: 0.4rem 0.6rem;
        font-size: 0.9rem;
    }

    /* Resumen del carrito más compacto */
    .cart-summary {
        padding-top: 0.75rem;
        margin-bottom: 0.75rem;
    }

    .summary-row {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }

    .summary-row.total {
        font-size: 1.3rem;
        padding-top: 0.5rem;
    }

    /* Botones de acción del carrito */
    .cart-actions .btn-large {
        padding: 0.9rem;
        font-size: 1rem;
        min-height: 48px;
    }

    /* Ajustar contenedor principal - header ahora es más alto (2 filas) */
    .pos-container {
        height: calc(100vh - 80px);
    }

    .products-panel {
        padding: 0.75rem;
    }

    /* Login responsive */
    #login-screen {
        padding: 1rem 0;
    }

    .login-container {
        padding: 1.5rem;
        margin-bottom: 0.5rem;
    }

    .login-container h1 {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }

    .pin-keyboard {
        padding: 1rem;
        margin-bottom: 1rem;
    }

    .pin-numpad {
        gap: 0.5rem;
    }

    .pin-key {
        min-height: 50px;
        font-size: 1.3rem;
    }
}

/* Media query específico para pantallas MUY pequeñas (800x600 exacto) */
@media (max-width: 850px) and (max-height: 650px) {
    .pos-header {
        padding: 0.3rem 0.4rem;
        flex-direction: column;
        gap: 0.4rem;
    }

    .header-info {
        font-size: 0.7rem;
        justify-content: center;
    }

    .header-actions {
        gap: 0.3rem;
        flex-wrap: nowrap;
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .header-actions::-webkit-scrollbar {
        display: none;
    }

    .header-actions .btn {
        padding: 0.25rem 0.5rem;
        font-size: 0.7rem;
        min-height: 28px;
        white-space: nowrap;
    }

    .cart-panel {
        width: 280px;
        padding: 0.75rem;
    }

    .cart-panel h2 {
        font-size: 1.1rem;
        margin-bottom: 0.75rem;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 0.5rem;
    }

    .product-card {
        padding: 0.5rem;
        min-height: 130px;
    }

    .product-icon {
        font-size: 2rem;
    }

    .product-name {
        font-size: 0.75rem;
    }

    .product-price {
        font-size: 0.9rem;
    }

    .search-bar input {
        font-size: 0.9rem;
        padding: 0.6rem;
        min-height: 38px;
    }

    .category-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
        min-height: 34px;
    }

    .cart-scroll-btn {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }

    .summary-row.total {
        font-size: 1.2rem;
    }

    #current-time {
        display: none; /* Ocultar hora en pantallas muy pequeñas */
    }
}

/* ==================== PANTALLA DE SINCRONIZACIÓN ==================== */
#sync-screen {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.sync-container {
    background: var(--card-bg);
    padding: 2.5rem 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 420px;
    text-align: center;
}

.sync-header h1 {
    color: var(--primary-color);
    font-size: 1.6rem;
    margin-bottom: 0.25rem;
}

.sync-header p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.sync-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    margin: 0 auto 1.25rem;
    animation: syncSpin 0.8s linear infinite;
}

@keyframes syncSpin {
    to { transform: rotate(360deg); }
}

.sync-status {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.sync-steps {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.sync-step {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.sync-step.active {
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
    font-weight: 500;
}

.sync-step.done {
    color: var(--success-color);
}

.sync-step.error {
    color: var(--danger-color);
}

.sync-step.skipped {
    color: var(--text-secondary);
    opacity: 0.6;
}

.sync-step-icon {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.sync-debug-log {
    margin-top: 1rem;
    background: #1e293b;
    color: #94a3b8;
    font-family: monospace;
    font-size: 0.75rem;
    padding: 0.75rem;
    border-radius: 0.5rem;
    max-height: 150px;
    overflow-y: auto;
    text-align: left;
    line-height: 1.4;
    white-space: pre-wrap;
    word-break: break-all;
}

/* ==================== PANTALLA DE CONFIGURACIÓN ==================== */
#settings-screen {
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    overflow-y: auto;
    padding: 1rem 0;
}

.settings-container {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 500px;
}

.settings-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.settings-header h1 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.settings-header .subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.settings-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.settings-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.settings-group label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.settings-checkbox label {
    flex-direction: row;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.settings-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.settings-connection-result {
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-weight: 500;
    text-align: center;
}

.settings-connection-result.success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.settings-connection-result.error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.settings-connection-result.testing {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

.settings-actions {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.settings-actions .btn {
    flex: 1;
}